I ran an Atomic on a warmed over ZZ502 in my 67 Chevelle a couple years ago. I loved it. It started every time, kept a great idle, plugs looks great, and the car made stupid power. I ran a second O2 sensor with a FAST monitor in each bank just to keep tabs on things for the first 100 miles and the system was dead on. Tough to beat for $2500. Was it making every last HP? no. I beat it was 995 there though. With 19 inch wheels and 30 series tires, it didn't matter anyway.
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1929 Roadster Pickup
1961 Chevy Parkwood Wagon
1956 Chevy 210
Smithcraft Collision and Restoration
Newcastle , CA
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